DR
AF
T
to run with 32 scale mph at speed step 32, with 50 scale mph at speed step 50, etc . This makes the
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throttle display a speedometer, and any two locomotives can be consisted together.
TODO - Museum Mode
6 DCC Decoder Programming
6.1 Mainline Programming
Mainline programming, also known as Operations mode or “OPS” programming is a method by which you
can configure a DCC Decoder’s CVs (Configuration Variables) while “in operation” on the mainline track. All
locomotives can continue operating while a locomotive is being programmed using Mainline Programming.
For more information on mainline programming, please refer to our help article on the subject
https://docs.tcsdcc.com/wiki/Support_-_DCC_Programming_Track
6.1.1 OPS mode programming with RailCom®
When programming a DCC decoder on the mainline, the CS-105 will attempt to use the NMRA standard for
decoder feedback (also known as RailCom
®
). For this to succeed, the following requirements have to be
met:
● The decoder must support RailCom
®
.
● RailCom addressed feedback must be enabled in the decoder (CV28 bit 2 must be set; typical
values are CV28=3 or CV28=131). If you’re unsure, you can place the locomotive on the
Programming Track to read the value of CV28.
● RailCom Cutout must be enabled in the CS-105 settings (DCC System Settings > Advanced >
Railcom Cutout > enabled).
● The locomotive must be
○ on the track directly connected to the CS-105’s Mainline track output, OR
○ on track powered by a RailCom-aware booster connected to the LCC port (such as the
B-106), and DCC System Settings > Advanced > Drive LCC Boosters > Enabled must be set
(as opposed to Enabled with no RailCom).
If you program a DCC decoder in OPS mode on the main which does support RailCom
®
, the decoder has
the ability to provide feedback to the command station which acknowledges that a programming command
has successfully completed. Similarly, the decoder can also send data to the command station, including
CV values, meaning that you will be able to read the CV values.
6.1.2 OPS mode programming without RailCom®
When the above listed conditions are not met, you cannot read the value of a CV, nor does the command
station have definitive certainty that a programming command was received and acted upon by the
decoder. You will see a message when trying to read or program a CV indicating that there was no RailCom
feedback. This is not an error message; when users without RailCom
®
feedback perform OPS mode
programming, they just assume writes to have worked.
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The configuration will necessarily have to stop increasing the locomotive’s actual speed beyond a certain speed
step, once the prototypical maximum speed is reached.
© 2022 Train Control Systems
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